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Ubuntu 21.04 USN-4918-3 Moderate: ClamAV Denial Of Service Issue

USN-4918-1 introduced a regression in ClamAV that could cause it to fail to scan.. =========================================================================Ubuntu Security Notice USN-4918-3 May 03, 2021 clamav regression ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 21.04 - Ubuntu 20.10 - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 ESM - Ubuntu 14.04 ESM Summary: USN-4918-1 introduced a regression in ClamAV that could cause it to fail to scan. Software Description: - clamav: Anti-virus utility for Unix Details: USN-4918-1 fixed vulnerabilities in ClamAV. The updated package could fail to properly scan in some situations. This update fixes the problem. Original advisory details: It was discovered that ClamAV incorrectly handled parsing Excel documents. A remote attacker could possibly use this issue to cause ClamAV to hang, resulting in a denial of service. (CVE-2021-1252) It was discovered that ClamAV incorrectly handled parsing PDF documents. A remote attacker could possibly use this issue to cause ClamAV to crash, resulting in a denial of service. (CVE-2021-1404) It was discovered that ClamAV incorrectly handled parsing email. A remote attacker could possibly use this issue to cause ClamAV to crash, resulting in a denial of service. (CVE-2021-1405) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 21.04: clamav 0.103.2+dfsg-1ubuntu0.21.04.1 libclamav9 0.103.2+dfsg-1ubuntu0.21.04.1 Ubuntu 20.10: clamav 0.103.2+dfsg-0ubuntu0.20.10.2 libclamav9 0.103.2+dfsg-0ubuntu0.20.10.2 Ubuntu 20.04 LTS: clamav 0.103.2+dfsg-0ubuntu0.20.04.2 libclamav9 0.103.2+dfsg-0ubuntu0.20.04.2 Ubuntu 18.04 LTS: clamav 0.103.2+dfsg-0ubuntu0.18.04.2 libclamav9 0.103.2+dfsg-0ubuntu0.18.04.2 Ubuntu 16.04 ESM: clamav 0.103.2+dfsg-0ubuntu0.16.04.1+esm1 libclamav9 0.103.2+dfsg-0ubuntu0.16.04.1+esm1 Ubuntu 14.04 ESM: clamav 0.103.2+dfsg-0ubuntu0.14.04.1+esm2 libclamav9 0.103.2+dfsg-0ubuntu0.14.04.1+esm2 This update uses a new upstream release, which includes additional bug fixes. In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-4918-3 https://ubuntu.com/security/notices/USN-4918-1 https://bugs.launchpad.net/ubuntu/+source/clamav/+bug/1926300 Package Information: https://launchpad.net/ubuntu/+source/clamav/0.103.2+dfsg-1ubuntu0.21.04.1 https://launchpad.net/ubuntu/+source/clamav/0.103.2+dfsg-0ubuntu0.20.10.2 https://launchpad.net/ubuntu/+source/clamav/0.103.2+dfsg-0ubuntu0.20.04.2 https://launchpad.net/ubuntu/+source/clamav/0.103.2+dfsg-0ubuntu0.18.04.2 . A regression problem with ClamAV on Ubuntu could result in unsuccessful scanning operations. Prompt action for an update is advised.. ClamAV Update, Ubuntu Advisory, Malware Protection. . LinuxSecurity.com Team

May 04, 2021 Ubuntu